GB/T 13894-2023 Chinese PDF (GB/T13894-2023) GB/T 45300-2025 GB/T 45593-2025_Chinese: Fine ceramics -

GB/T 45593-2025_Chinese: Fine ceramics - Determination of the abrasion resistance of coatings by micro-scale abrasion test (Chinese: 精细陶瓷 微磨损试验测定涂层的耐磨性)

GB 44703-2024_Chinese: General requirements for optical radiation safety (Chinese: 光辐射安全通用要求)

English versions: GB/T 45441-2025

3-2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 3: Fittings (Chinese: 燃气用埋地聚乙烯（PE）管道系统 第3部分：管件)

2-2025_Chinese: Safety requirements of battery swap for electric vehicles - Part 2: Commercial vehicle (Chinese: 电动汽车换电安全要求 第2部分：商用车辆)

GB/T 13894-2023 Chinese PDF (GB/T13894-2023) GB/T 45300-2025 GB/T 45593-2025_Chinese: Fine ceramics -GB T 13894 2023_Chinese: Petroleum and liquid petroleum products Level measurement Manual methods (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13894 2023